ALPHA AV103-12 Datasheet
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com 1
Specifications subject to change without notice. 12/99A
Parameter
1
Condition Frequency Min. Typ. Max. Unit
Switching Characteristics Rise, On (10/90% or 50% CTL to 90% RF) 130 nS
Fall, Off (90/10% RF or 50% CTL to 10% RF) 60 nS
Intermodulation Intercept Point (IIP3)3For Two-tone Input Power 0 dBm 0.9 GHz 12 dBm
Control Voltage (VC) 0.0 V
S
V
Supply Voltage (VS) 5.0 V
Control Current (IC) 1.1 x V
C
mA
Supply Current (IS) 150 µA
GaAs IC 35 dB Voltage Variable Attenuator
Single Positive Control 0.5–2.5 GHz
Features
■ Single Positive +5 V Control Voltage
■ 35 dB Attenuation Range @ 0.9 GHz
■ Less Than ±1 dB Attenuation Change Over
Temperature
■ Excellent Linearity Performance
SOIC-8
AV103-12
0.049
(1.24 mm)
0.016
(0.41 mm)
0.016 MAX.
(0.41 mm) x
45˚ CHAMFER
PIN 1
0.197 (5.00 mm)
0.189 (4.80 mm)
0.068
(1.73 mm) MAX.
0.010 (0.25 mm)
0.004 (0.10 mm)
0.010 (0.25 mm)
0.007 (0.17 mm)
0.158 (4.00 mm)
0.150 (3.80 mm)
8˚
MAX.
0.020 (0.51 mm) MAX.
0.244 (6.20 mm)
0.228 (5.80 mm)
0.050 (1.27 mm) BSC
PIN 8
PIN 1
INDICATOR
Description
The AV103-12 GaAs IC FET voltage variable attenuator
provides 35 dB attenuation range at 900 MHz controlled
by a single positive voltage.The VVA has a linear transfer
curve of 9 dB/V slope, with input and output VSWR better
than 2.1:1 over all states. Its attenuation range at 1900
MHz is 33 dB. It operates with supply voltage of +5 V and
control voltage of 0 V to +5 V in a low cost SOIC-8
package. The RF ports require 100 pF DC blocking
capacitors.
Parameter
1
Frequency Min. Typ. Max. Unit
Insertion Loss (VC = 5 V) 0.5–1.0 GHz 2.5 2.7 dB
1.0–2.0 GHz 2.8 3.0 dB
2.0–2.5 GHz 3.2 3.4 dB
Maximum Attenuation (VC= 0 V)
2
0.5–0.8 GHz 28 32 dB
0.8–1.0 GHz 31 35 dB
1.0–1.7 GHz 30 34 dB
1.7–2.0 GHz 29 33 dB
2.0–2.5 GHz 28 32 dB
VSWR (I/O)
3
0.5–2.5 GHz 2.1:1
Electrical Specifications at 25°C (VS= 5 V)
Operating Characteristics at 25°C (VS= 5 V)
1. All measurements made in a 50 Ω system, unless otherwise specified.
2. Maximum attenuation includes insertion loss.
3. For worst case state.
Preliminary
2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 12/99A
GaAs IC 35 dB Voltage Variable Attenuator Single Positive Control 0.5–2.5 GHz AV103-12
0
-1
-2
-3
-4
2.52.0
Frequency (GHz)
Insertion Loss vs. Frequency
Insertion Loss (dB)
-5
0.5 1.0 1.5
V
C
Attenuation vs. Control Voltage
20
15
10
5
0
0.5
25
30
35
40
Attenuation (dB)
3.0 3.5 4.0 4.5 5.01.5 2.0 2.51.00
Frequency (GHz)
Maximum Attenuation vs. Frequency
0
5
10
15
20
25
30
35
40
2.51.5 2.00.5 1.0
Attenuation (dB)
Typical Performance Data @ 0.9 GHz
(Unless Otherwise Specified)
V
C
VSWR vs. Control Voltage
2.0
2.2
2.4
0.5
1.8
1.6
1.4
1.2
1.0
VSWR
3.0 3.5 4.0 4.5 5.01.5 2.0 2.51.00
Input VSWR
Output VSWR
V
C
Input IP3 vs. Control Voltage
25
30
35
0.5
20
15
10
5
0
IIP3 (dBm)
3.0 3.5 4.0 4.5 5.01.5 2.0 2.51.00
V
C
Attenuation vs. Control Voltage
Over Temperature
1
2
3
0.5
0
-1
-2
-3
Attenuation (dB)
3.0 3.5 4.0 4.5 5.01.5 2.0 2.51.00
+70˚C
+85˚C
-20˚C
Attenuation Normalized to 25˚C
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